Astro Pneumatic Tool 78340 8-Piece Nano Pinless Universal Impact Sockets – SAE, 3/8 drive

Overview

The Astro Pneumatic Tool 78340 SAE 8-piece set delivers compact, high-performance impact sockets for professionals and DIY enthusiasts alike. Forged cro-mo steel and a lifetime warranty stand up to repeated use, while the pinless design adds flexible movement in tight spaces.

Design and durability

The pinless universal head allows a full 360 degree range of motion, letting you angle or rotate the socket as needed. The nano form factor makes the set up to 11 percent shorter than standard low-profile universal sockets, enabling easier access between engine components and framing. A hex ball swivel design distributes more of the impact force into the bolt interface, promoting steadier turns and reducing side loading on the fastener.

What you get

• Sizes 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, and 3/4 inches
• Drive size: 3/8 inch
• Material: forged cro-mo steel
• Pinless universal head with 360 degree freedom

Key benefits in action

• Shorter length helps fit into crowded engine bays and behind panels
• 360 degree flexibility reduces the need for multiple adapters
• Durable cro-mo construction supports heavy use with a lifetime warranty
• Versatile set covers common SAE sizes for quick, flexible work

Practical use cases

Ideal for under-hood maintenance, suspension work, and mechanical tasks where access is restricted by hoses, brackets, or adjacent components. The pinless head adapts to irregular bolt angles without forcing awkward positions.

Care and maintenance

Keep sockets clean and lubricated where appropriate, and store them in their tray to preserve the finish and mating surfaces. Regular inspection helps maintain performance across job cycles.